XML 41 R30.htm IDEA: XBRL DOCUMENT
v3.19.1

STOCK OPTIONS (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Schedule of Stock Option Activity | A summary of activity in the Plan during the three months ended March 31, 2019 and 2018 follows:
Three Months Ended March 31, 2019 |  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life in Years |  |  | Aggregate Intrinsic Value |
Outstanding at beginning of year |  |  | 537,872 |  |  | $ | 26.49 |  |  |  | 6.96 |  |  | $ | 2,088 |
Granted |  |  | 19,000 |  |  |  | 29.80 |  |  |  | 9.90 |  |  |  | — |
Exercised |  |  | (19,172 | ) |  |  | 25.08 |  |  |  | 6.14 |  |  |  | 79 |
Forfeited |  |  | (16,400 | ) |  |  | 28.90 |  |  |  | 8.49 |  |  |  | 27 |
Balance, March 31, 2019 |  |  | 521,300 |  |  | $ | 26.59 |  |  |  | 6.79 |  |  | $ | 1,745 |
Exercisable at end of period |  |  | 194,140 |  |  | $ | 24.52 |  |  |  | 5.41 |  |  | $ | 938 |
Three Months Ended March 31, 2018 |  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life in Years |  |  | Aggregate Intrinsic Value |
Outstanding at beginning of year |  |  | 469,044 |  |  | $ | 25.11 |  |  |  | 7.32 |  |  | $ | 2,623 |
Granted |  |  | 15,000 |  |  |  | 31.84 |  |  |  | 9.88 |  |  |  | 26 |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeited |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance, March 31, 2018 |  |  | 484,044 |  |  | $ | 25.32 |  |  |  | 7.16 |  |  | $ | 3,872 |
Exercisable at end of period |  |  | 140,644 |  |  | $ | 23.61 |  |  |  | 5.71 |  |  | $ | 1,364 |
Schedule of Nonvested Stock Option Activity | A summary of nonvested activity in the Plan during the three months ended March 31, 2019 and 2018 follows:
Three Months Ended March 31, 2019 |  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life in Years |  |  | Aggregate Intrinsic Value |
Outstanding at beginning of year |  |  | 331,560 |  |  | $ | 27.74 |  |  |  | 7.77 |  |  | $ | 975 |
Granted |  |  | 19,000 |  |  |  | 29.80 |  |  |  | 9.90 |  |  |  | — |
Vested |  |  | (7,000 | ) |  |  | 27.13 |  |  |  | 7.81 |  |  |  | 22 |
Forfeited |  |  | (16,400 | ) |  |  | 28.90 |  |  |  | 8.49 |  |  |  | 27 |
Balance, March 31, 2019 |  |  | 327,160 |  |  | $ | 27.81 |  |  |  | 7.61 |  |  | $ | 807 |
Three Months Ended March 31, 2018 |  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life in Years |  |  | Aggregate Intrinsic Value |
Outstanding at beginning of year |  |  | 334,400 |  |  | $ | 25.72 |  |  |  | 7.91 |  |  | $ | 1,673 |
Granted |  |  | 15,000 |  |  |  | 31.84 |  |  |  | 9.88 |  |  |  | 26 |
Vested |  |  | (6,000 | ) |  |  | 23.90 |  |  |  | 8.15 |  |  |  | 56 |
Forfeited |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance, March 31, 2018 |  |  | 343,400 |  |  | $ | 26.02 |  |  |  | 7.75 |  |  | $ | 2,508 |
Plan Information | Information related to the Plan is as follows for the three months ended:
|  | March 31, 2019 |  |  | March 31, 2018 |
Intrinsic value of options exercised |  | $ | 79 |  |  | $ | — |
Cash received from options exercised |  |  | 481 |  |  |  | — |
Weighted average fair value of options granted |  |  | 20.64 |  |  |  | 5.44 |
Summary of Restricted Stock Awards and Units Activity | A summary of activity in the Plan during the three months ended March 31, 2019 and 2018 follows:
Three Months Ended March 31, 2019 |  | Number of Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at beginning of year |  |  | 2,398 |  |  | $ | 31.57 |
Granted |  |  | 30,500 |  |  |  | 30.25 |
Exercised |  |  | — |  |  |  | — |
Forfeited |  |  | — |  |  |  | — |
Balance, March 31, 2019 |  |  | 32,898 |  |  | $ | 29.43 |
Exercisable at end of period |  |  | 959 |  |  | $ | 31.57 |
Three Months Ended March 31, 2018 |  | Number of Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at beginning of year |  |  | 2,398 |  |  | $ | 31.57 |
Granted |  |  | — |  |  |  | — |
Exercised |  |  | — |  |  |  | — |
Forfeited |  |  | — |  |  |  | — |
Balance, March 31, 2019 |  |  | 2,398 |  |  | $ | 31.57 |
Exercisable at end of period |  |  | — |  |  | $ | 31.57 |
Summary of Nonvested Restricted Stock Awards and Units Activity | A summary of nonvested activity in the Plan during the three months ended March 31, 2019 and 2018 follows:
Three Months Ended March 31, 2019 |  | Number of Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at beginning of year |  |  | 1,439 |  |  | $ | 31.57 |
Granted |  |  | 30,500 |  |  |  | 30.25 |
Vested |  |  | — |  |  |  | — |
Forfeited |  |  | — |  |  |  | — |
Balance, March 31, 2019 |  |  | 31,939 |  |  | $ | 30.31 |
Three Months Ended March 31, 2018 |  | Number of Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at beginning of year |  |  | 2,398 |  |  | $ | 31.57 |
Granted |  |  | — |  |  |  | — |
Vested |  |  | — |  |  |  | — |
Forfeited |  |  | — |  |  |  | — |
Balance, March 31, 2018 |  |  | 2,398 |  |  | $ | 31.57 |

X
- Definition Schedule of nonvested restricted stock awards and units activity. + References No definition available. + Details
Name: | gnty_ScheduleOfNonvestedRestrictedStockAwardsAndUnitsActivityTableTextBlock
Namespace Prefix: | gnty_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of cash received from exercise of stock options and similar instruments granted under share-based payment arrangements and tax benefit from exercise of stock options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109197908&loc=SL79508275-113901 + Details
Name: | us-gaap_CashProceedsReceivedAndTaxBenefitFromShareBasedPaymentAwardsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration